Module.onRuntimeInitialized = function()
{
    // Create new typed array initialized to [1,2,3,40000,5]
    // You can also use Float32Array, or any other TypeArray
    // Keep in mind that you need to use the correctly sized TypeArray
    // To align with the size of the C datatype of what you are setting
    let data = new Int32Array([1,2,3,4,5])

    // Allocate block of memory for array and get address of the block
    let ptr = Module._malloc(data.BYTES_PER_ELEMENT * data.length)

    // Set the block of memory to the int array
    // You NEED to use 'new Uint8Array(data.buffer)' to wrap 'data'
    // because you are setting data in HEAPU8 which requires a view
    // to an unsigned byte-sized int array
    //
    // So if you used HEAP8 instead of HEAPU8, you would use
    // 'new Int8Array' instead
    Module.HEAPU8.set(new Uint8Array(data.buffer), ptr);

    // Call sum_arr() with pointer to array
    // Should print '1 2 3 4 5' and return the sum of all the numbers in 'data'
    Module.cwrap('sum_arr', 'number', ['number', 'number'])(ptr, 5)
}